<?php
class IPManager{
	static public function getRealIpAddr() {
		if (!empty($_SERVER['HTTP_CLIENT_IP'])) {
			$ip=$_SERVER['HTTP_CLIENT_IP'];
		} elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
			$ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
		} else {
			$ip=$_SERVER['REMOTE_ADDR'];
		}
		
		return $ip;
	}
}
?>